docs: def verify_pop(pop: ProofOfPossession, ver_key: VerKey, gen: Generator) -> bool:
          """
          Verifies the proof of possession and returns true - if signature valid or false otherwise.
  
          :param: pop - Proof of possession
          :param: ver_key - Verification key
          :param: gen - Generator point
          :return: true if signature valid
          """
  
          logger = logging.getLogger(__name__)
          logger.debug("Bls::verify_pop: >>> pop: %r, ver_key: %r, gen: %r",
                       pop,
                       ver_key,
                       gen)
  
          valid = c_bool()
          do_call('indy_crypto_bsl_verify_pop',
                  pop.c_instance,
                  ver_key.c_instance,
                  gen.c_instance,
                  byref(valid))
  
          res = valid
          logger.debug("Bls::verify_pop: <<< res: %r", res)
          return res